物理化学学报2011，Vol.27Issue(7)：1743-1750,8.
介孔型铝酸镍纳米棒的制备及其催化氢化裂解甲苯性能
Fabrication of Mesoporous NiAl2O4 Nanorods and Their Catalytic Properties for Toluene Hydrocracking
摘要
Abstract
Mesoporous single-crystalline NiAl2O4 nanorods were successfully synthesized by a one-step hydrothermal method using a pore-forming agent (NH4HCO3). A series of controlled experiments were also carried out to better understand the formation mechanism of NiAl2O4 nanorods. The experimental results indicate that the reaction time, reactant concentration and the amount of NH4HCO3 play an important role in determining the morphology. The morphology, structure and composition of the nanorods were investigated using transmission electron microscopy, high resolution transmission electron microscopy, scanning electron microscopy and X-ray diffraction. The specific surface area and pore-size distribution of the obtained product was determined by nitrogen adsorption-desorption measurements. NiAl2O4 nanorods have a high Brunauer-Emmett-Teller surface area and good porosity properties. The catalytic performance of the NiAl2O4 nanorods during toluene hydrocracking was investigated using a fixed bed reactor. After the toluene catalytic reactions over 400 min at a water stream/carbon molar ratio (H2O/C) of 1.0 with a reaction temperature of 700 ℃ the average conversion efficiency of toluene was about 86.5%. Compared to the NiAl2O4 nanoparticles prepared by alkaline precipitation, the mesoporous NiAl2O4 nanorods exhibited higher catalytic activity and stability during toluene hydrocracking. A possible formation mechanism for the mesoporous NiAl2O4 nanorods is proposed and discussed.关键词
水热法/单晶NiAl2O4/NH4HCO3/镍基催化剂/表征Key words
Hydrothermal method/Single-crystalline NiAl2O4/NH4HCO3/Nickel catalyst/Characterization分类
化学化工引用本文复制引用
申杉杉,陆文聪,张良苗,岳宝华,韩玲,张浩..介孔型铝酸镍纳米棒的制备及其催化氢化裂解甲苯性能[J].物理化学学报,2011,27(7):1743-1750,8.基金项目
The project was supported by the National Natural Science Foundation of China(20973108),Shanghai Education Committee,China(11ZZ83),Shanghai Leading Academic Discipline Project,China(J50101),and Innovation Fund of Shanghai University,China(A.10-010-09-023).国家自然科学基金(20973108),上海教委(11ZZ83),上海市重点学科建设(J50101)和上海大学创新基金(A.10-0101-09-023)资助项目 （20973108）
